Sand-feeding device for molding-machines.



PATENTED SEPT. 8, 1908.

m ea: n

W. H. WANGEL-IN.

SAND FEEDING DEVICE FOR MOLDING MACHINES.

APPLICATION FILED JULY 20,1907.

n: NaRRls PETERS 0:17., wuumarau, a c.

UNITED PATENT OFFICE.

WALTER H. WANGELIN, OF BELLEVILLE, ILLINOIS.

SAND-FEEDING DEVICE FOR MOLDING-MACHINES.

Application filed July 20, 1907.

To all whom it may concern:

Be it known that I, WALTER H. WANGELIN, a citizen of the United Statesof America, and residing at the city of Belleville, in the county of St.Clair and State of Illinois, have invented certain new and usefulImprovements in Sand-Feeding Devices for Molding-Machines, of which thefollowing is afull, clear, and exact description, reference being had tothe accompanying drawings, forming part of this specification.

My invention relates to a device for feeding either dry or wet sand tomolding machines.

Heretofore it has been possible to feed dry sand to molding machineswithout any difficulty inasmuch as sand, in a dry condition will movedownwardly and out of a receptacle in which it is placed above themolding machine, without any assistance, but in so far as I am aware, nodevice has been employed in which sand in a wet condition may be causedto move from a receptacle placed above a molding machine so that theflow from said receptacle will not cease during the operation of themachine and the receptacle be entirely empty.

By the employment of the feeder to which my invention relates, the sandmay be delivered from the receptacle as slowly or rapidly as may bedesired and until the receptacle is emptied.

Figure I is a vertical section taken through a sand receiver and myfeeding means located therein. Fig. II is in part a vertical sectiontaken through the receiver, and in part an elevation of my feeder.

In the accompanying drawings, A designates a receiver in which the sandto be fed is placed and which is provided at its bottom with a spout B.

1 designates an inner driving shaft that extends horizontally throughthe receiver A, over, and adjacent to, the spout B, and which may berotated by any suitable means such as a drive chain (not shown) appliedto a sprocket wheel 2 (see II).

3 designates a frame of H-shape loosely fitted at its inner end to thedriving shaft 1 within the receiver A so that it is susceptible offreedom of movement relative to said driving shaft and may move in adownward direction in the receiver when freed of restraint, this beingdue to the outer end of the frame being entirely free of connection withthe receiver.

4 is an outer shaft mounted in the outer Specification of LettersPatent.

Patented Sept. s, 1908.

Serial No. 384,720.

ends of the frame 3 and on which are driven sprocket wheels 5.

. 6 are driving sprocket wheels rigidly mounted upon the driving shaft 1and which are complementary to the driven sprocket wheels 5.

7 are endless chains mounted upon the driven sprocket wheels 5 anddriving sprocket wheels 6. These chains are adapted to be driven by thedriving sprocket wheels 6 on which they operate and by which they areguided at the inner end of the frame 3, while they are guided at theouter end-of the frame by the driven sprocket wheels 5. The chains havefixed to them conveying bars 8 of any desirable number which extendtransversely of the frame 3 and are adapted to travel with the chainsand scrape the sand downwardly directly toward the spout.

In the practical use of my sand feeding means, sand is placed in thereceiver A to be discharged therefrom through the spout B as desired,and the feeder is placed in operation by the communication of power tothe driving shaft 1, whereby the chains 7 with their conveying bars 8are moved while supported by the frame 3. The chains 4 and theirconveying bars rest continuously against the sand in the receiver, asillustrated in Fig. I and the chains being driven in the directionindicated by the arrow, Fig. I, the sand is scraped and conveyed in adownward direction by the conveying bars 8 to the spout of the receiverto flow therethrough under the driving shaft. As the quantity of sandbecomes lessened in the receiver, the feeder falls toward the bottom ofthe receiver to maintain the conveying bars in contact with the sand andthis contact is sustained until the entire amount of sand has beendischarged from the receiver.

I claim:

1. In a sand feeder, the combination of a receiver, having a spout'atthe bottom thereof, a driving shaft mountedin said receiver, over, andadjacent to, the spout, and sand feeding means loosely supported at itsinner end by the said driving shaft and free at its outer end except bythe body of sand placed in said receiver and carrying sand feeding meansadapted to scrape the body of sand in the direction of the spout,substantially as set forth.

2. In a sand feeder, the combination of a receiver, having a spout atthe bottom thereof, a driving shaft mounted in said receiver,

over, and adjacent to, the spout, a frame loosely fitted at its innerend to said driving shaft and free at its outer end, and carrying sandfeeding means adapted to scrape the body of sand in the direction of thespout,

. driven by said driving shaft and supported by said frame,substantially as set forth.

3. In a sand feeder, the combination of a receiver, having a spout atthe bottom thereof, an inner driving shaft mounted in said receiver,over, and adjacent to, the spout, a

frame loosely fitted at its inner end to said 4. In a sand feeder, thecombination of a receiver, having a spout at the bottom theres drivingshaft, and free at its outer end, a

driven shaft mounted in the outer end of said frame, driving sprocketWheels fixed to said driving shaft, driven sprocket Wheels on the outershaft, endless chains mounted upon said sprocket Wheels, and conveyingbars fixed to said chains and adapted to scrape the body of the sand inthe direction of the spout, substantially as set forth.

WVALTER H. WANGELIN. In the presence of LILY PosT, L. C. TAAKE

